1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "logging/log.hpp" 27 #include "memory/metaspace/metaDebug.hpp" 28 #include "runtime/os.hpp" 29 #include "runtime/thread.hpp" 30 #include "utilities/debug.hpp" 31 #include "utilities/globalDefinitions.hpp" 32 33 namespace metaspace { 34 namespace internals { 35 36 int Metadebug::_allocation_fail_alot_count = 0; 37 38 void Metadebug::init_allocation_fail_alot_count() { 39 if (MetadataAllocationFailALot) { 40 _allocation_fail_alot_count = 41 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); 42 } 43 } 44 45 #ifdef ASSERT 46 bool Metadebug::test_metadata_failure() { 47 if (MetadataAllocationFailALot && 48 Threads::is_vm_complete()) { 49 if (_allocation_fail_alot_count > 0) { 50 _allocation_fail_alot_count--; 51 } else { 52 log_trace(gc, metaspace, freelist)("Metadata allocation failing for MetadataAllocationFailALot"); 53 init_allocation_fail_alot_count(); 54 return true; 55 } 56 } 57 return false; 58 } 59 #endif 60 61 62 } // namespace metaspace 63 } // namespace internals 64 65 66